Claude Opus 4.5
Overview
Claude Opus 4.5 is a frontier model from Anthropic, released in 2026. It accepts text, image as input and produces text. With a context window of 500K tokens, it is well suited to long-context analysis, agentic coding and writing.
Capabilities
On reasoning, Claude Opus 4.5 is rated best-in-class, while its coding ability is best-in-class. Multimodal support: Partial. These characteristics make it a strong fit for long-context analysis, agentic coding and writing. As with any frontier system, real-world performance depends heavily on how you prompt and integrate it.
Availability & Pricing
Claude Opus 4.5 is accessible via an API. Pricing model: $15-75 / M tokens. Availability and pricing for AI models change frequently; confirm the latest details from Anthropic before building on it.
Best Use Cases
The sweet spot for Claude Opus 4.5 is long-context analysis, agentic coding and writing. Teams choosing a model should weigh context length, cost, latency and modality against their workload — Claude Opus 4.5 is a particularly good match when those priorities align with its strengths.